/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.jasper.el;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import javax.el.ELContext;
import javax.el.ELException;
import javax.el.MethodExpression;
import javax.el.MethodInfo;
import javax.el.MethodNotFoundException;
import javax.el.PropertyNotFoundException;

public final class JspMethodExpression extends MethodExpression implements
		Externalizable {

	private String mark;

	private MethodExpression target;

	public JspMethodExpression() {
		super();
	}

	public JspMethodExpression(String mark, MethodExpression target) {
		this.target = target;
		this.mark = mark;
	}

	public MethodInfo getMethodInfo(ELContext context)
			throws NullPointerException, PropertyNotFoundException,
			MethodNotFoundException, ELException {
		try {
			return this.target.getMethodInfo(context);
		} catch (MethodNotFoundException e) {
			if (e instanceof JspMethodNotFoundException)
				throw e;
			throw new JspMethodNotFoundException(this.mark, e);
		} catch (PropertyNotFoundException e) {
			if (e instanceof JspPropertyNotFoundException)
				throw e;
			throw new JspPropertyNotFoundException(this.mark, e);
		} catch (ELException e) {
			if (e instanceof JspELException)
				throw e;
			throw new JspELException(this.mark, e);
		}
	}

	public Object invoke(ELContext context, Object[] params)
			throws NullPointerException, PropertyNotFoundException,
			MethodNotFoundException, ELException {
		try {
			return this.target.invoke(context, params);
		} catch (MethodNotFoundException e) {
			if (e instanceof JspMethodNotFoundException)
				throw e;
			throw new JspMethodNotFoundException(this.mark, e);
		} catch (PropertyNotFoundException e) {
			if (e instanceof JspPropertyNotFoundException)
				throw e;
			throw new JspPropertyNotFoundException(this.mark, e);
		} catch (ELException e) {
			if (e instanceof JspELException)
				throw e;
			throw new JspELException(this.mark, e);
		}
	}

	public boolean equals(Object obj) {
		return this.target.equals(obj);
	}

	public int hashCode() {
		return this.target.hashCode();
	}

	public String getExpressionString() {
		return this.target.getExpressionString();
	}

	public boolean isLiteralText() {
		return this.target.isLiteralText();
	}

	public void writeExternal(ObjectOutput out) throws IOException {
		out.writeUTF(this.mark);
		out.writeObject(this.target);
	}

	public void readExternal(ObjectInput in) throws IOException,
			ClassNotFoundException {
		this.mark = in.readUTF();
		this.target = (MethodExpression) in.readObject();
	}

}
